Electric signaling system.



No. 855,727. PATENTED JUNE 4, 1907. E. L. ORGUTT & R. SHELDON.

ELECTRIC SIGNALING SYSTEM.

APPLICATION FILED $EPT1, 1908.

i WITNESSES INVENTORS M M M UNITED STATES PATENT OFFIGE.

- EDWARD L. OBCUTT AND RICHARD SHELDON, OF NEW YORK, N. Y., ASSIGN- ORSTO RAILWAY ELECTRIC SIGNAL COMPANY, 'AQCORPORATIO N (,PF

N EW JERSEY. i

ELECTRIC SIGNALING sYs'rEm.

/' o mill-1011 01 it may concern:

Be it known that we, EDWARD L. OR- cc'r'r and RICHARD SHELDON, bothcitizens of the United States, and residents of the borough ofManhattan, county, city, and State of New York, have invented certain.new and useful Improvements in Electric Signaling Systems for Railroads,of'wl'u'ch the following is a specification.

systems for railways.

This invention relates to electric signaling It seeks to provide asystem economical in installation, maintenance and operation, coupledwith general elliciency and reliability.

The invent-ion is particularly characterized by the local operating andcontrolling circuits carried on the train.

The invention also seeks to provide an ellicient, reliable andeconomical-arran e ment whereby a train-may be automatically stoppedbefore entering a dangerous block.

la the accompanying drawings forming part of this specificationz-thefigure is a diagram illustrating the circuits and devices appliedto twoprotected blocks.

liel'erring now more particularly to the drawings, the track is dividedinto four blocks, in which rails 1 and 5 constitute the [list block;rails 2 and 5 the secondblock;

rails 3 and 5 the third block; and rails 4 and ,1

5 the fourth block. Rails 1, 2, 3 and 4 are insulated from each 'otherwhile rail 5 is electrically continuous.

6 and 8, and 37 and 35 are airs of track contacts associated with the -bock to which rails 2 and 5 belong. (30 are similar contacts butiareassociated with the succeedingblocl. These track contacts consistpreferably of short rails spaced apart and fixed to the road bed inadvance of the protected block. The contacts of each pair areelectrically connected, as=b v an'insulated wire.

12 is a transformer located at the end of the block and connected aswill be disclosed. Contact 8 is connected by wire 9 to the primary coil10 of the transformer 12. The coil 10 is then connected through wire 11with rail 5. This constitutes a circuit which will be termed the-tracksupply circuit, as it supplies the energy for the transformer 12. Thepower for this circuit is supplied by a generator 13 which iscontinu-Specification of Letter: PQtabnt.

Application filed September 1, 1906- Ml! 9- 832,994.

57 and 5S, and 5S) and Patented une 4, 19075 move with the train andmake contact with track contacts 6 or 8, etc. The return from the tracksupply circuit is from rail 5 to truck 16,"wires 17, 18,' back togenerator 13.- 6o Generator 13 also normall energizes the localcontrolling circuitont e train which is traced as follows:'13, 19,compensatin resistance 20, wire 21, contact 22-, circuit 0 oser 23, wire24, back cont'act25,'circuit break- 6 5 I ing contact 26-, wire 27,controlling circuit controller 28, wire 29, safety-danger devicecontroller 30, wires 31, 18 and back to'generator 13. This circuit,however, is broken by the circuit breaking train contact 26 when thiscontact en agesone of the track contacts 37 or 35. Tliese track contacts37 and 35- are connected together by the conductor 36 and then totherail 2 by wire 34;

Rail 2 then connects with one terminal of the secondary 32 oftransformer 12 through wire 33. The other terniinal of the secondary 32is then connected by wire 38 with return rail 5. This completes a secondtrack circuit which will be termed the controlling track circuit. 4

Lamps 42 and 45 and magnet 48 with its cooperating mechanism aresafety-danger devices located on the train and n erated by the generator13 as follows:- trohcr 30, normally energized as described above,normally holds its armature 52 in contact with the contact 50 thus thereis a normally closed operating circuit from generator 13, wire.39, topoint 40, branching 90 there through one branch; 44,'safetylamp 45, 1

wire 46, contact 50; and in a secondbraneh; wire 47, magnet 48, wire,49, contact 50, thence through armature 52, wire 53, back to generator13. lingmagnet 30', is deenergized, this armature 52 leaves contact 50and connects with con-' tact 51 completing the danger operating eireuitfrom generator 13, wire 39 to point 40, wire 41, lamp 42, wire 43,contact 51, 10

armature 52, wire 53, back togenerator 13. The train contacts 15 and 26are so arranged on the train that they will engage the track eontactsjfiand 37 or Sand 35 respectively in the order named. former 12 will beenergized before the local i ain. Generator 13 is connected 55 e con-However, if control- 5 Thus the trans- 1o5 controlling circuit throughthe circuit breaking train contact 26 is broken. Then the controllingtrack circuit will be connected with the controlling train circuit asfollows:- "lrack contact 37, circuit breaking train contact 26, wire 27,controlling circuit controller magnet 28, wire 29, controller 30, wire31, wire 17, truck 16, rail 5, wire 38, secondary 32, wire 33, rail 2,wire 34, contact 35, wire 36 back to track contact 37.

28 is a magnetic controller" connected in the train controlling circuitand operating the circuit closer 22, 23 and is designed so as to beoperated by alternating current as are also the other magnetic devicesillustrated. The circuit closer 22, 23,. when closed, which is itsnormal condition, completesa local train or signal controlling circuitas follows :-Generator 13, wire 19, resistance -'-20, wire 21, contact22, circuit closer 22, 23, wire 24, back stop 25, circuit breaking traincontact 26, wire 27 controller magnet 28, wire 29, controller 30, wires31, 18 and back to generator 13. 1 1

20 is a resistance roperly to proportion the flow of energy in t enormal local controlling circuitdirect from the crater 13 and closed at25, 26 to the flow 0 energy through the controller portion of that'circuit when said controllingl circuit is supplied from the secondary oft e transformer by cutting in the track-controlling circuit eta-26, 37and! cutting out the generator 13 and resistancei 20 on the o ening of25, 26.

If desired the controller 30 may operate not only its own circuitchlmger'52, 50, 51 but maybe designedto operate the circuit closer 23,in-which case a single armature would suflico.

56 is a valve which is designed to control the air brakes or the steamsupply on $0 train and isoperated when the contro er 48 is denrgized.The spring "55 retracts the armature 54 and releases the valve by meansof the link 64 and'lever 63.

The signal 42, 45, may be of any a proved type to give a safety anddanger in ication. It is shown as two lamps .42 and 45 each. giving adistinctive color. j

61 indicates a transformer identical with transformer 12- but associatedwith the succeeding block, Each succeeding block to be protectedv islikewise provided with a i transformer.

The 0 erationof thds'ytem and ap aratus is as fol owsz-As describedabove t e local Econtrolling circuit on the train-is normally tact 2526, and also the circuit 0 oser 22, 23,

which together with the magnet 28 constii tute a controller for thiscontrolling circuit and form an important feature of this invention.Obviously a break in this controlling circuitiiiay occur either at 22,23or at.25, 26 or at both localities. As the train advances the traincontacts 15 and 26 st engage the first pair of track contacts 6 and 37,

respectively in the order named and make previously engaged trackcontact 6 and energized the supply track circuit. The sup ply trackcircuit is completed by train contact 15 engaging track contact 6 andthe truck 16 engaging rail 5. If the block is clear and the rails are,intact, the controlling track circuit is one ized' by the transformerand is connected t ougl; a portion of the train controlling circuit bymeans of train contact 26, 'etcras previousl v( ii-ascribed. In thismanner t e local contro ling circuit controller 28 is energizedby thetrack controll' circuit (is is also the magnet 30. 28 lib l ds 22, 23closed and 30 maintains the safety indication on the train. As the traincontact 26 leaves the track contact 37, 26 closes against co'ntact25restoring the local controlling circuit to its normal condition. Asecond test of the block in advance of the train is made when traincontacts 15 and 26, respectively, engage the second pair of trackcontacts 8'and 35. ,The operation of this second testjsprecisely-similar to that of the first test described, In fact, similartests may be repated wherever desired merely by providing additionalpairs of track contacts similar to .6, 37 and 8, 35. ,i a

The operation of the circuits just described has been for. a clearblock. However, if when the train contacts 15 and 26 engage the trackcontacts 6 and 37, the block 2, 5 is dan erous', the local, controllingcircuit. contro lcr 28 will not be energized by the track controllingcircuit, since a train in bldck 2, 5 would shunt this controllin currentthrough its-wheels and axles or a heck in the rails would form a breakin thetraek'controlling circuit. Thus in case of danger when traincontact 26breaks the local controlling circuit at 25 this localcontrolling circgit is als broken by circuit closer 22, 23whidh'operates to lock the circuit at danger even after the contact 26rengages contact 25. ll this' see,

would be false and obviously highly danger- I 'ous'altliougl a secondtest of'the block would be obtained upon reaching the track con tacts 8and 35. v

- If a'safcty indication were obtained at a first test at trackcontactsfi and 37, and after passing these contacts the block- 2, 5 hadbecomedangerous, this dangerousicondition would be communicated to theengineer upon reaching the second set of track contacts 8,

- 35. Upon leaving these track contacts 8,

the controller 22, 23 and would operate to lock the controlling circuitand the signals controlled therelyy' at danger. J

Z-iIt is preferable to locate the first set of test contacts 6 and 37considerably in advance of the block protected while the second set ofcontacts 8 and 35 may preferably be located at the entrance to theblock, thus two tests. one considerably in advance of the block and onemade upon entering the block are insured. Control of the .operatingcircuits for the safety danger dev ces is obtained through the magnet 30in the local controlling circuit which operates the armature 52. VVhe'n.tliisniagnet is energized the local-operating circuit includesthecontact 50 and the safety portion ofthe safety danger devices. Whem themagnet-30 is denergized, its armature 52 is in contact with frontcclnt'act 51 and the local operating circuit is through the dangerportion of the safety danger devices.

Obviously it would be possible to combine the magnets 30 and 28 so thata single magnet, such as 30, would control not only the circuits 52, 50etc. and 52,51 etc.. but also the circuit through 22, 23 etc.

Altho h generator 13 is designated 5r being of fiie alternating ty e asare likewise the transformer at the bloc s, never the less, under someconditions, it might be desirable to employ a-D. C. generator and rotaryconverters in place of the transformer. Also the generator for the suply circuit may he located' as desired witliin the scope of the claims. V

It will be understood that the details of "this invention may bevariously modified nal operating circuit on a train; a signalcontrolling circuit on a train; a track circuit; and a controller on atrain for the signal controlling circuit operated and controlled by thetrack circuit.

ways, the combination of a signal; a train troller operating circuit;acontrollii g circuit; a track circuit; and'a controller for thecontrolling circuit operated and controlled by.

the track circuit.

3. In an electric signaling system for railways, the combination of asignal on atrain; a train-controller on a train a combined signal andtrain-controller operating circuit on a train; a controlling circuit ona train; a track circuit; and a controller operated and controlled bythe track circuit.

2. In an electric signaling system for railcontroller; a combined signaland train-con- 4, In an electric signaling system for rail- 'atingcircuit,'thcrefor; a. signal controlling circuit; and a controller forthe signal controlling circuit operated and controlled by thecontrolling track circuit.

Ways, the combination of a supply track circuit; a generator thereforlocatcd..on the train; a controlling track circuit; a signal;anoperatiiig circuit therefor; a signal controlling circuit; and acontroller'for the signal controlling circuit operated and controlled bythe controlling track-circuit.

7. In an electric signaling system for rail- ,ways, the combination of asupply track circuit including a. transformer; a generator 'tlierefor;acont-rolling track circuit; a signal; an operating circuit therefor; asignal controlling circuit; and a controller for the signal controllingcircuit operated and controlled by the controlling track circuit.

ways, the combination of a supply track circuit including a transformer;a generator therefor; a controlling track circuit including atransformer; a signal; an operating circuit therefor; a signalcontrolling circuit;

circuit operated and controlled by the controlling track circuit.

9. In an electric signaling systenr for railcuit including atransformer; a generator therefor on a tram; a controlling track .cii

cuit including a transformer; a signal; anop- 8. In an electricsignaling system for rail-.

ways, the combination of a supply track (lll controlling track circuit;a signal; an oper- 6. In-an electric signaling system for railand acontroller for the signal controlling at the entrance to the prececrating circuittherefor; a signal controlling circuit; and'a controllerfor the signal controlling circuit o,eratcd and controlled by thecontrolling track circuit.

10. In an clectric signaling system for railways, the combination of asignal; an operating circuit therefor; a controlling circuit thereforincluding a controller for the 0 erating circuit; a controller for thecontrol 'ng circuit; a circuit breaking train contact and acontrollercircuit closer in the controlling circuit;

11. In an electric signaling system for railways,-the combination of asignal; a signal operating circuit; a normally closed signal controllingcircuit; a controller for thesignal operating circuit; a controller forthe signal controlling circuit; a circuit breaking train contactoperating to breakthe normal con-f trolling circuit when the trainreaches a predetermined point.

12. In an electric signaling system for railways, the combination ofasignaling circuit; a controlling circuit therefor normally including agenerator; a controller for the controlling circuit; and -a circuitbreakin traincontact and a circuit closer operated y the controller inthe normal controlling Qcircuit.

13. In an electric block signaling system for railways, the combinationof I a supply track circuit; a generator therefor;'a contro ling trackcircuit comprising a'track contact" ing block, a see- 0nd track contactat the end of the precedin block, one rail of the block, -a transformeran a return rail;a signal operating circuit on a train; a signalcontrolling circuit on a train; a controller for the signal controllingcircuit operated and controlled by the controlling track circuit.

-14, In an electric signaling system for railwa s, the combination of alocal signal contro lin circuit including a controller for saidcontroIling circuit; a circuit closer operated. by said controller; anequalizing shunt resist'- ance associatedwith said circuit closer; and acircuit breaking train contact for said controllin circuit. i A j 15. Inan electric signaling system for railways, the combination of a signalcontrollin" circuit on a train normally includin a loca generator; atrack circuit; a circuit breaking. traincontact operating to cut out thelocal generator from the controllim circuit and to cut in the trackcircuit when the train reaches a predetermined point. V

16. In an electric block signaling system for railways, the combinationof asupply track circuit including a track contact one coil of atraiisformer and one rail of the block; a generator: therefor on atrain; a controlling track circuit including a track contact, theother-coil nffthe transformer and both rails of the block; a signal onthe train; a signat operating circuit on the train; a signal controllingcircuit on the train normally includin and closed through the generator,a Signa controller, a controller for the controlling circuit, a circuitbreakin train contact, and a circuit closer operated y the saidcontrolling circuit co troller; and said circuit breaking traincontiact, when the train reaches a predetermined point, operating to'cutout the generator from the controlling circuit and 'cut into thecontrolling circuit the controlling track circuit. j

17-. In an electric signaling system for railways, t ecombination ofageneratoron a train; a ransformer in the block arranged to foeenergized by said train generator; 8. controlling track circuitincluding said transformeranda track contact; a sign'al and asigtrollingcircuit on the train normal y closed through a signalcontroller, a magnetic controller for the controlling circuit, a circuitated by said magnetic controller, and the generator; said circuitbreaking train contact operating-when the train reaches a predeterminedpoint, to cut the controlling track circuit into the said controllincircuit on the r train and to breakthe norma controlling circuit onthetrain at two points in case of danger. a i j '18; In .an electricsignalipg' system for railways, tliecombinationof-a generator on atrainira controlling track circuit operated by said generator, includingtwo separated track contacts; a'si al controlling circuit on the trainnormally mcludin the train generator, a controller for the saicontrolling circuit on the train, a circuit closer o erated by said.controller'and a circuit brea 'ing train contact; saidtrain contactoperatively .engaging each ofthe track contacts when the train reachespredetermined poinxs, then breaking the normal'signal contrdling circuiton the tiain and cuttirf the controlling track circuit into said signcontrolling circuit on the train and in case of danger breakin saidcontrolling circuit on the train at two points.

' 19. In an electric blocksignhling system for railways, the combinationof a controlling controlling circuit on a train; means in advance ofeach protected block tovbreak the normal signal controlling circuitonthe train at two points and to cut the controlling track circuit intosaid signal controlling circuit on the train. j Y 20.- In an electricblock signaling system track circuit for. each block; a normally closedseparated means in advance of each protected block eachto-break thenormatlsignal connal operatingcircuit on the train; a si nal conbreakingtrain contact,.a circuit closer opertrack circuit for each block; anormally closed for railways, thecombination of'a controllingcontrolling.circuihcn a train a plurality of l ently to operate thesignal controlling circuit trolling circuit on the train at two pointsand to cut the controlling track circuit into said signal controllingcircuit on the train.

21. In an electric block signaling f'fTStBIH tor railways, thecombination of a normally closed signal controlling circuit on a train;means on the train to break the normal signal controlling circuit at twopoints when the train reaches a predetermined position in advance of aprotected block; a controlling track circuit at the protected blockindependon the train and then cause it to assume its normal conditionwhen and only when the block is safe.

In an electric signaling system for railways, the combination of asupply circuit; an alternating generator therefor; a controlling trackcircuit; a signal; an operating circuit therefor; a signal controllingclrcuit; and a g magnetic controller for the signal controlling circuitoperable and controllable by alternating current from the controllingtrack circuit.

.23. In an electric signaling system for railways, the combination of asupply track rircuit; an alternating generator thercl'or on a train; acontrolling track circuit; a signal; an operating circuit therefor: asignalronlrolling circuit; and a 'n'iagnctic controller tor the signalcontrolling circuit operable and con-- trollablc by alternating currentfrom the (ontrolling track circuit.

In testimony whereol',\\'e have signed our names to this specification,in the presence of

